Adresat czeka.

Adresat means addressee or recipient: the person something is addressed to.

In real-life Polish, it is often used in fairly formal or practical contexts, such as:

• letters
• parcels
• official documents
• messages

So it is not the most casual everyday word for person; it is more specific.

It is nominative singular.

That is the basic dictionary form, and here it is the subject of the sentence:

• Adresat = the addressee / recipient
• czeka = is waiting / waits

Yes. Grammatically, adresat is a masculine singular noun.

A few useful related forms:

• adresat = male addressee / recipient, or sometimes a generic formal term
• adresatka = female addressee
• adresaci = addressees / recipients (mixed group or masculine personal plural)
• adresatki = female addressees

In practice, adresat can sometimes be used in formal language even when the person's sex is not especially important.

Czeka is the 3rd person singular present tense of czekać.

So it can mean:

• waits
• is waiting

Polish present tense often covers both the simple present and the English progressive present.

Because Polish does not have a separate verb form like English is waiting.

So:

• Adresat czeka can mean The addressee waits or The addressee is waiting
• the exact English translation depends on context

In most normal situations, English would probably use is waiting.

Because Polish has no articles.

So adresat can mean:

• the addressee
• an addressee

Context tells you which one is meant.

Because Polish usually does not need subject pronouns if the subject is already clear.

Here the subject is explicitly given as adresat, so adding a pronoun would be unnecessary.

Polish often prefers:

• Adresat czeka.

rather than something like:

• On czeka. = He is waiting.

unless you especially want to emphasize he.

Adresat czeka is the most neutral word order.

Polish word order is fairly flexible, so Czeka adresat is also possible, but it sounds marked and would usually give special emphasis, something like:

• It is the addressee who is waiting
• The addressee is waiting, not someone else

So for a learner, Adresat czeka is the safest neutral version.

No. Czekać can be used on its own, as in this sentence:

• Adresat czeka. = The addressee is waiting.

But if you say what someone is waiting for, you usually use na + accusative:

• Adresat czeka na list. = The addressee is waiting for the letter.
• Adresat czeka na paczkę. = The addressee is waiting for the parcel.

So:

• no object: just czeka
• object introduced: usually czeka na ...

A simple English-friendly approximation is:

a-DRE-sat CHE-ka

A few pronunciation points:

• stress is usually on the next-to-last syllable
  • a-DRE-sat
  • CZE-ka
• cz sounds like English ch in chess
• e is like e in met
• a is like a in father

So czeka sounds roughly like CHE-ka, not seka or zeka.

Yes. Czekać is an imperfective verb.

That matters because Polish normally uses the imperfective for:

• ongoing actions
• repeated actions
• general states

So Adresat czeka is completely natural for The addressee is waiting.

A related perfective verb such as poczekać would not normally be used the same way in the present:

• Adresat poczeka means something more like The addressee will wait / can wait, not is waiting now.

So in this sentence, czeka is the correct normal choice.